观察留置时间的长短，以及静脉炎的发生、导管脱出、堵塞等情况。

Observe the length of retention time, as well as the occurrence of phlebitis, catheter extrusion, plug and so on.

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这些霉菌有70%能导致鼻子发痒、流泪、咳嗽、气短、胸痛、静脉窦堵塞、疲劳感、睡眠问题等症状。

Of these, 70 percent can cause symptoms including itchy noses, watery eyes, coughing, shortness of breath, chest pains, sinus congestion, feelings of fatigue and problems sleeping.

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在相同的血管条件、相同的封管方法及近似药物使用的情况下，观察两组病人的静脉炎、套管堵塞、套管脱出以及留置时间。

Under the same condition of vessel, tuber sealing method and drug using, the occurrence of phlebitis, block and disengage of tuber, retain time were observed between the two groups.

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